Pump feeding mechanism for internal-combustion engines.



L. H. LBBLLEM E G. JEAN-BAPTISTE BREGERAS. I PUMP P EEDING MECHANISM FORINTERNAL GOMBUSTION ENGINES.

. APPLICATION FILED NOV. 1B, 1911.

'Patented Aug.. 20', 1912.A

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'PUMP FEEDING MECHANISM Fil-1R'INTERAL-COIVEUSTEGN ENGNES.

18, 1911. Serial No. 651,131.

To all. fur/wm it may concern f lle it known that we, Louis Henin Lnnnfilli-:Lumi und AGisron Jem -Brirfris'in BR- oinms. citizens of theRepublic of France, und residents of Boulevard diisnieres,Neuilly-sur-llcine, Seine, in the said Republic, eng'neeis, haveinvented a new and use ful Pump Feeding Mechanism tor Internal-Conibustion lllngjines7 of which the following is a specification.

The governing of internal combustion enfines which can operate with aliquid com bustiblc has generally been eliected l'iitherto bycentrifugal force governing. Such governors, however, are subjectsolelyto the that .of the power developed or used; this latter factor howeveris alone essential, narticulznly when the engines are used for `drivingmachinery or groups of electric' generators. y

The present invention relates to e, governing device which adjusts withthe reatest recision thev admission of the liquid cornustible into suchengines in accordance with the demand mede upon them for newer, moreparticularly when the engine is driving en electric niotor.` For thispurpose the dmission of the liquid fuel into the engine is controlled bye. pump which forces the liquid under pressure into a closed receivercontaining mercury; the level of the letter, under the action of a solidbody floating therein end suitably displac Ld, rises or .falls and thusregulates the pressure of the liquid combustible, such es petrol,supplied to the engine. The movement of the solid body may be elle@ d byhand or ma; be produced a sole-noi surrounding it and supplied withelectr-re current; in the latter cese the body is made of soft iron andconstitutes the core of the solenoid. n

The accompanying drawing shows in vertical section a governorconstructed according to the present invent-ion and the petrol pump, theadjustment being produced in this case by the elect-ric current.

The petrol or other liquid contained in a reservoir a from whence it issucked by a pump of any suitable kind which delivers 1t into a duct l).In the eirample engine. For example the sha't't d that drives the pumpmay screw threaded portion j of i that the petrol is 'ter through -pipeZto a degree 'proiortiohal combustible is shown the pump consists of aplunger driven in suitable manner from thebe un extension ot the dis--tributingg;l shattof the engine. The pipe l) delivers into :1i-closedreceiver e into which 1s screwed e tube f extending; into the vesselNEUILLY Divided and this application tiled November and around which isa solenoid g supplied v with current from the generstoror trom a dynamodriven oy the motor or .in :my other suitable ine-nner. ln the receivere there is a loyer of met Jury It which, owix'igg to the pressure of thepetrol5 rises in the tube into the mercury there extends within the tubef a core 'a' of the solenoid ,7; this core is hollow and isteirninetedet its nse'by n wood and similarly hollow. Between the core there issullicient space for passage of the petrol so that the excess o thelatter may be returned. b 4Way of pipe lle-tc the reservoir a. Thepetrol torced by the pressure from the receiver e posses to the enginethrough a tube l.

The operation ci the r. followsz-r1`hepetrol supplied by pump c travelsthrough tube l; intotlie'recciver e. Here it is subjected to thepressure of e, column o'niercury which rises in the tulie and within thehollow core e', f7', the height oi tho column being nroportionat to theintensity of the current traveling through the solenoid g., that is to4sayto the power developed by the internalcombustion engine, so

.always supplied to the latto the power demanded or the engine. lt willbe seen that the variation oi'the current in' the/solenoid causes thehollow `core i, j to riseor descend and accordingly to displace thecolumn o' mercury in the inthe core, causing its level to rise or fall.When the output of power by the engine, that is to say the intensity ofthe correr. t, increases, the solenoid g attracts its core i more orless which therefore descends and increases the pressure of the petrolsupplied yo the motor. lf the pressure exert-ed by the iercury becomestoo great, the excess of petrol which cannot be delivered through thetube Z rises .in the form of bubbles through theincrciiry indicated inthe drawing an passes above the core c' whence it can return throughtube la to the supply reservoir o.

The arrangement is adjust-ed in such a man-g fargement is as u nd thetube tube and with- Instead of using u cor such :is z', operated by asolenoid, it is evident that there may be substituted a solid bodyextending into the mercur la, the movements of which muy be 5 contro led either directly byhand or through hinterm@ ary of a mechanical orelectric-il device #any suitable `kind set in action by the engine.'

Having thus described our invention and the best means we know ofcarrying the same into practical effect, we claim l. A device lforregulating the pressure of liquid combustible admitted into un internalcombustion engine, which device comprises u closed receiver containingliquid combustible und niercurvxgdevices for forcing liquid combustibleinto the said receiver, :i solid body extending into the said mercury,means .for causing the said sol-id body to rise or full so :is to varythe height ofthe column of mercury and a pipe for delivering the liquidcombustible under pressure.

S2. device for regulating the pressure of combustible admitted into aninternal combustion engine, which device comprises a supply reservoircontaining combustible liquid, u closed receiver containing combustibleliquid and mercury, devices for forcing the liquid combustible from thesupply reservoir into the closed ing into the said mercury, means forcausing e said solid body to rise or full so :1s to vary the height ofthe column of mercury, a oipe for delivering liquid combustible underreceiver, n solid body extend-` pressure and n pipe for conducting buckto the supply vreservoir excess of lllqpid combustible from .the closedrecelver.

3. A device for regulating the` pressure of liquid emnbustil'zleadmitted into an internal combustion engine, which device comprises aclosed receiver contuininr li uid combustible und mercury, devices Efororcing the liquid combustible into the said receiver, a metallic bodyextending into the mercury, a solenoid for causing the said solid bodyto risc or fall and n pipe for delivering the liquid combustible underpressure.

17. A device for regulating the pressure of ,:ombustible liquid admittedinto un internal combustion engine, which device comprises a closedreceiver containing liquid combustible und mercury, devices for forcingthe liquid combustible into the said receiver, a tube extending,r intothe said receiver, u bol-cd metallic body :irrungcd in the suid tube, ubored muss. ofA wood fixed to the base of the said metallic body, asolenoid surroundingr the said tube und npipe for delivering thel-iq?"Vv uid combustible under pressure. In testin'iony, that we claimthe foregoing as our invention, we have signed our names in presence oftwo witnesses, this seventh duv of November 1911.

LOUIS HENRI LIBERT BELLEN.` GASTON JEAN-BAPTISTE BREGRAS. Witnesses:

H. C. Colm, Amine FARE.

